JPS6014260Y2 - color printer - Google Patents

Description

[Detailed description of the invention] This invention is a device to facilitate printing work in a color laboratory, and relates to a color printer for large-sized prints (for example, IOX 12-inch) that requires trial printing. .

In the case of enlarging conventional amateur photographs and printing large-sized prints such as weddings, business photographs of studios, commercial photographs, etc., the print size is usually smaller than the size of the prints that are called service sizes. Because of this, the acceptable range of color tone and printing density that is considered appropriate for printing is very narrow, and photographic paper is expensive due to the large print size, so negative 1 is usually used to avoid failures in printing. After performing two to four trial prints per frame, the actual printing is performed.

To explain this work order, first, verify the shooting condition of the negative by some method, decide the printing conditions (exposure time, insertion time of color correction filter, density key value, etc.) in advance, and then set these conditions on the printer. Print part of the negative and process it.

For the second time, print conditions are determined again by referring to this test print and the previous print conditions, and a test print is performed.

This process is repeated until a suitable finish is obtained, and finally the print is made to the specified size.

In the above work, it was necessary to write down the printing conditions before trial printing, and it was also necessary to compare and contrast the printing conditions with the finished test print, but this work was difficult for the operator. It was extremely complicated and inefficient.

The present invention eliminates this drawback and provides a color printer in which printing conditions are automatically imprinted on the print surface of a test print.

Embodiments of the present invention will be described below with reference to the drawings.

Generally, when making a test print, you only need to print a portion of the negative, and in the case of a color printer that uses wide roll paper with a width of 5 to 10 inches,
By reducing the amount of photographic paper fed per frame, less expensive photographic paper is wasted.

Therefore, a print mask for trial printing can be made by overlaying the test mask 7 on the actual print mask 8 as shown in FIG. 3 to create a test print.

When trial printing is performed using this test mask, a print example as shown in FIG. 1 is obtained.

Reference numeral 6 indicates roll paper (rolled photographic paper), and 1 to 5 indicate test prints made by changing printing conditions for every two frames through the gap 1 of the test mask 7.7.

In the present invention, when the test mask 7, which is normally located at the position indicated by the dashed-dotted line in FIG. As shown in FIG. 4, the print condition burning device 11 is configured to enter a part of the optical path of the enlarged image.

In normal negatives, the main subject is the center of the frame or
It is often located close to that area, and it is not necessary to see the entire image from top to bottom during trial firing.

In consideration of this, the present invention has a part of the imaging optical path blocked by a print data burning device, and print conditions for the operation keyboard are written into this space.

FIG. 5 shows an embodiment of the hardening device 11.
is arranged so as to be able to enter into a guide plate 14 fixed to the lower edge of the print mask 8 and having a U-shaped cross section so as to block a part of the imaging optical path from outside the imaging optical path.

A rack 13 for moving the burning device 11 is attached to the side surface of the burning device 11 facing the open end of the guide plate 14, and is connected to a drive source M such as a motor via a pyonin 12.

This driving source M simultaneously moves the test mask 7.7 to the axis 16,
The shaft 16 can be rotated around the shaft 16.
．． It communicates with the gear fixed at 16.

This drive transmission system is distantly related to known means and does not require further explanation.

The printing device 11 converts the correction values of various correction keys built into the printing operation board of the color printer into digital values (
The optical system 11a is converted into a numerical value and printed on the edge of the roll paper.
It is connected to the correction value converter of the operation board by an optical fiber 15 so that it can be printed through the optical fiber 15.

In the present invention, the printing device is configured in this way, so by operating the switch that activates the printing condition drive source,
After rotating the test mask 7.7 to the state shown by the solid line in Figure 3 and simultaneously moving the burning device 11 below the edge of the print mask 8, a trial firing is performed as shown in Figure 2A. Printing conditions 1', 2', . . . corresponding to test prints 1, 2, . . . printed from the negative are printed.

The opening of Figure 2 shows an example of an enlarged printing mode of printing condition 1' in Figure 2A, showing the printing density value D, yellow correction filter Y1 magenta correction filter M1 cyan correction filter C correction amount and exposure time. T is shown in the dashed circle.

The above description is one embodiment of the present invention, and the operation of the print condition printing device 11 and the test mask 7.7 can also be mechanically operated by a link mechanism.

Further, since the test mask is provided to reduce the amount of paper consumed, it is not necessarily necessary for the configuration of the present invention.

By printing the print conditions and the test print on the same screen in this way, the conditions and the test print can be compared with certainty, making the printing work easier.

Also, according to the present invention, it is possible to print test prints and print conditions at the same time and take appropriate measures.
If test printing is performed under several different conditions for each negative frame in the manner shown in FIG. 5, it becomes possible to know the printing conditions from a single test printing, which is extremely effective in practical use.

[Brief explanation of the drawing]

Figures 1 and 2 are plan views showing examples of test prints, Figure 3 is a front view of the main parts of the easel section of the present invention, Figure 4 is a side view of the same, and Figure 5 is the main part of the easel section of the present invention. FIG. 3 is a perspective view showing the relationship between the printing condition printing device and the test mask in the invention. 6...Color paper, 7...Test mask, 8...Print mask, 9...
・Paper feeding means, 10...Enlarger lens, 1
1...Print condition burning device, 12...
Zenion, 13...Rack, 14...
Guide plate, 15...Optical fiber, 1
6...Axis.

Claims (1)

[Scope of utility model registration request] In a color printer that obtains a print by exposing a roll paper to light that has passed through a negative, a test mask is moved from a position where an imaging optical path is opened to a position where a portion of the imaging optical path is partially blocked; A test printing condition printing device is provided which is movable to a position that blocks a part of the area not covered by the test mask and a position outside the imaging optical path, and when performing the negative test printing, the test mask is used to In addition to blocking a part of the image optical path,
The test printing condition printing device is positioned at the opening of the test mask in the imaging optical path so as to block a part of the imaging optical path that is not covered by the test mask, and the test printing conditions are automatically printed at the same time as the trial printing. A color printer characterized in that printing conditions are printed on the test printing surface of the negative.